Performance Analysis of Grid-Tied Inverter using different PLL’s

SEEE DIGIBOOK ON ENGINEERING & TECHNOLOGY, VOL. 01, FEB 2018 PP.(218-222)
Abstract– The safe operation of Distributed Generation (DG) systems require proper synchronization with power grids by using power electronics converters. Grid Synchronization is one of the most important issues for operating grid-tied inverters in practical applications, which involve Distributed Power Generation Systems, Flexible AC Transmission Systems (FACTS) and High Voltage Direct Current (HVDC) Transmission and so on. The use of Phase Locked Loop (PLL) is an important technique for grid synchronization along with control techniques. In recent years, there have been many attempts to design more advanced PLLs for three-phase applications. This paper presents a comparative study of Synchronous Reference Frame (SRF) PLL and Double Synchronous Reference Frame (DSRF) PLL. The comparative study has been made among SRF PLL, DSRF PLL (based on synthesis circuit) and DSOGI PLL under normal grid condition and line to ground fault. The results are obtained from MATLAB/SIMULINK and are analyzed for feasibility of the study.
Index Terms – Distributed Generation (DG) system, Grid synchronization, Synchronous Reference Frame (SRF) PLL, Double Synchronous Reference Frame (DSRF) PLL, Double Second Order Generalized Integrator (DSOGI) PLL.
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E. Karthika, Dr. R. Rajeswari
Government College of Technology,
Coimbatore, India.
karthikavidhya14@gmail.com,
rreee@gct.ac.in

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